(!!!!!) (Best Overall Pair) 6F6G Marconi Spain NOS 1940's (33.2ma and 34.2ma) 1-2% matched
$129.99
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1 matched pair) 6F6G Marconi Spain NOS 1940's 1 tube) 33.2ma Gm=2530 1 tube) 34.2ma Gm=2560 TUBES PLUGGED INTO OCTAL SOCKETS IN PHOTO Test settings: Vplate=285V Vscreen=285V Vgrid=-20V Good Ma range = 32-38ma Good Gm range = 2400-2600 Recommended for - Sparton Nocturne 1186 from 1936- Fire Stone Sir Chef S-7404-3 1939- Montgomery-Ward Airline Model 62-226- Supratek Cortese- Victoria- WE 106 preamp clone - Wards Airline Radio
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